Ice-cream freezer.



u'o. 633,62l. v Patented Sept. 26, I899. w. B. smm.

ICE CREAM FREEZER.

(Application filed May 17, 1899.)

(No Model.)

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NiTEn STATES PATENT OFFICE.

'WILLIAM B. SMITH, OF COLUMBIA, SOUTH CAROLINA.

ICE-CREAM FREEZER.

SPECIFICATION forming part of Letters Patent No. 633,621, datedSeptember 26, 1899. Application filed May 17,1899. Serial no. 717,204.(NomodeL) To (tZZ whom, it may concern:

Be it known that I, WILLIAM B. SMITH, a citizen of the UnitedStates,residing at Columbia, in the county of Richland and State ofSouth Carolina, have invented a new and useful Ice-Cream Freezer, ofwhich the following is a specification.

This invention relates to ice-cream freezers, and more particularly tothat class in which the cream and the freezing medium are bodilyrotatable; and it has for its object to provide a device of this naturein which a number of different styles and flavors of cream may besimultaneously frozen with an extreme quickness and with a correspondingeconomy of time and freezing medium.

The invention consists of a box or casing having its opposite ends openand provided with watertight closures or lids for said open ends, whichlids are preferably hingedly connected with an adjacent edge of thecasing and have at their opposite edges hasps adapted to engage suitableholding means on the casing. Through the sides of the casing andtransversely thereof is passed a supportingshaft provided with aturning-crank and having suitable bearings in a supporting-frame. Twohorizontal partitions are arranged transversely of the casing, one ateach side of the said shaft, and connected with each of the partitionsis a second longitudinal partition extending to the corresponding openend of the box or casing. The partitions referred to are all formed offoraminous material and result in, dividing the easing into two upperand two lower compartments, all of which are equal. In each of thecompartments is placed a quantity of a freezing medium, which I preferto be finely-divided ice, with a suitable freezing mixture, and in thisfreezing medium I embed a number of cream-receptacles, each consistingof a preferably cylindrical casing having a cap or 'cover adapted to befitted thereon with a water tight joint. These cream-receptacles areplaced loosely in each compartment, and as the casing is rotated endover end the cream-receptacles have a universal motion within theirrespective compartments, resulting in a quick churning and freezing ofthe cream and effecting an extreme fineness and smoothness of thefinished product.

In the drawings forming a portion of this specification and in whichlike numerals of reference indicate similar parts in the several views,Figure 1 is a perspective view of my freezer mounted in itssupporting-frame, a corner of the freezer-casing being broken away toshow an adjacent foraminous partition. Fig. 2 is a section on line 2 2of Fig. 1, the shaft and integral parts being shown in elevation. Fig. 3is an elevation of one form of cream-holding can employed by me andhaving a cap or cover adapted to be held frictionally in place thereon.Fig. 4 is a similar View to Fig. 3, showing a different form ofcream-holding can having a cap adapted to be held in place byscrew-threads.

Referring now to the drawings, in operating in accordance with myinvention I form a casing 5, comprising sides 6 and having its ends 7normally open. The ends of the casing are adapted to be closed by covers7 and and 8, which latter are hingedly connected at one side to theadjacent edge of a side of the casing and are adapted to lie upon theedges of the open ends of the casing with a watertight joint, securedby-means of a packing 9, arranged Within the cover and adapted fordirect engagement with the edges of the easing. Hasps 10, pivotallyconnected with the covers, are adapted to engagecorrespondingly-arranged staples 11 upon the sides of the casing, afterwhich engagement holdingpins 12 are passed through the staples, toprevent displacement of the hasps, in the usual manner.

Passed centrally and transversely of the sides of the casing 5 is ashaft 14:, having a crank 15 at one end, through the medium of whichsaid shaft may be rotated to rotate the casing and its contents, saidshaft being journaled in bearings 16 in the uprights 17 of a suitablesupporting-frame of any desired construction.

lVithin the casing 5 and transversely thereof in planes parallel withthe open ends of the casing are arranged two partitions 18 and 19, lyingat opposite sides of the shaft 14, said partitions being of foraminousmaterial, as

' the casing and adapted to be engaged by the packing of the adjacentcover when the latter is in a closed position. The result of thisarrangement of the partitions is the formation of four equalcompartments or chambers, of which the two upon each side of the shaft14: are separated only by a foraminous wall or partition, while thecouple of chambers at one side is separated from the couple at the otherside by an interspace through which the shaft 14 passes, in addition tothe foraminous partitions 18 and 19. Thus it will be seen that as theshaft let is rotated the casing 5 will be similarly moved, causing arevolution of the chambers within the casing about the shaft, or ratherabout the axis of the shaft.

In connection with the compartments or chambers of the casing I employ anumber of cream-receptacles, of which one form is shown in Fig. 3 of thedrawings and consists of a cylindrical case 25, having its base curvedoutwardly, as shown at 26, and provided with a frictionally-held cap orcover 27, having a flange 28, which extends downwardly of and inengagement with the outer surface of the case or body to such a distanceas to establish a suctional holding in addition to the frictionalengagement, and thus to prevent accidental withdrawal of the cover. InFig. 4 of the drawings is shown a similar cream-receptacle comprising acase 30, whose bottom is curved outwardly, said case having its upperend screw-threaded, as at 32, to receive the corresponding threads uponthe flange 33 of a cap or cover 34, adapted for engagement therewith.

In practice I place in the compartments at one side of the shaft 14 afreezing medium, which I prefer shall be finely-divided ice, and intothis ice I place loosely a number of cream-receptacles containing thecream to be frozen and having their covers tightly in place to preventboth the escape of the cream and the entrance of foreign matter. Thecasing 5 is then reversed, the cover for the first-named compartmentshaving been closed down and fastened in the manner above described, andthe cover for the second compartments having been raised the saidsecondcompartments are provided with a suitable quantity of finely-dividedice. A number of creamreceptacles are then thrown loosely into thecompartments and a freezing mixture consisting of salt and water or ofother ingredienis is contributed in suitable quantity. The cover is thenclosed down and fastened in place and the freezer is ready foroperation. The casing is then rotated by means of the crank 15 or in anyother desired manner, causing the cream-receptacles to charge backwardlyand forwardly in their compartments with a universal movement, causing aquick melting of the ice and a correspondingly quick freezing of thecream, the freezing action be iug further hastened by the fact that thecream-receptacles are entirely surrounded by the freezing mixture.Moreover, this universal movement of each cream-receptacle causes acomplete churning of the contents of the receptacle, throwing the creamfrom side to side and from end to end, effectively breaking up anddisintegrating any lumps that may tend to be formed and resulting in aproduct of extreme smoothness and fineness. In the operation of mydevice I usually place, approximately, twenty-five of thecream-receptacles in each compartment, which receptacles are preferablyabout three inches long and two inches in diameter, so that when frozenthe contents of the receptacles are in a form and size well adapted forserving.

It will be readily understood that in practice I may form the parts ofmy device of whatever material I may deem expedient and that inconnection with the casing 5 I may use a cover of non-conductivematerial to prevent absorption of heat from the outside, also that I mayvary the specific form and construction herein shown and described,without departing from the spirit of my invention.

Having thus described my invention, what I claim is 1. An ice-creamfreezer comprising a rotatable casing divided into compartments throughthe medium of longitudinal and radial partitions lying at right anglesto each other, and a cream-receptacle arranged within each compartmentand being free of all connections whereby it is adapted for universalmovement and to rotate bodily about the axis of the casing.

2. An ice-cream freezer comprising a rotatable casing divided intocompartments separated by foraminous longitudinal and transverse radialpartitions, and a cream-receptacle arranged loosely within eachcompartment and adapted for universal movement therein.

3. An ice-cream freezer comprising a rotatable casing divided intocompartments having mutual communication throughout their adjacentsurfaces, and a cream-receptacle within each compartment and havinguniversal movement therein.

4:. An ice-cream freezer comprising a rotatable casing divided intocompartments adapted for revolution bodily about the axis of revolutionof said casing and having mutual communication throughout their adjacentsurfaces, and a cream-receptacle arranged loosely in each compartmentadapted for universal movement therein.

5. An ice-cream freezer comprising. a rotatable casing provided withcompartments through the medium of longitudinal and radial partitionslying at right angles to each other and having perforations throughout 1my own I have hereto aflixecl my signature their surfaces, and acream-receptacle Within in the presence of two Witnesses. eachcompartment and free of all connec- VIIIIAM B SMITH tions, whereby itmay have a universalmovet J J 5 ment in the compartment and rotatebodily about the axis of the casing.

In testimony that I claim the foregoing as Witnesses:

J. Ross OoLHoUN, THEODORE DALTON.

